*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--brand:#1a56db;--brand-dark:#1340b0;--brand-light:#e8f0fe;--success:#059669;--success-bg:#f0fdf4;--success-bdr:#a7f3d0;--surface:#fff;--bg:#f4f7fb;--border:#dde3ee;--text:#1e2a3a;--muted:#64748b;--radius:12px;--shadow:0 4px 24px #1a56db1a}body{background:var(--bg);color:var(--text);min-height:100vh;padding:32px 16px 64px;font-family:Segoe UI,system-ui,-apple-system,sans-serif}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 32px}.card-title{color:var(--text);align-items:center;gap:10px;margin-bottom:20px;font-size:18px;font-weight:700;display:flex}.card-title .step{background:var(--brand);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;font-size:13px;font-weight:700;display:flex}.form-grid{grid-template-columns:1fr 1fr;gap:18px;display:grid}@media (width<=540px){.form-grid{grid-template-columns:1fr}}.form-group-row{align-items:center;gap:16px;display:flex}.form-group-row label{white-space:nowrap;flex-shrink:0;margin-bottom:0!important}.form-group-row input{flex:1}.form-group label{color:var(--text);margin-bottom:7px;font-size:14px;font-weight:700;display:block}.form-group input[type=number]{border:1.5px solid var(--border);width:100%;color:var(--text);background:var(--surface);-moz-appearance:textfield;border-radius:8px;outline:none;padding:10px 14px;font-size:15px;transition:border-color .18s}.form-group input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none}.form-group input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none}.form-group input:focus{border-color:var(--brand)}.form-group input.field-error{border-color:#dc2626}.results-grid{grid-template-columns:1fr;gap:16px;display:grid}.result-section{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:20px}.result-section.full-width{grid-column:1/-1}.result-section h3{color:var(--brand);border-bottom:1px solid var(--border);margin-bottom:14px;padding-bottom:8px;font-size:13px;font-weight:700}.result-row{justify-content:space-between;align-items:baseline;gap:12px;padding:6px 0;font-size:14px;display:flex}.r-label{color:var(--muted);flex:1}.r-value{color:var(--text);white-space:nowrap;text-align:right;font-weight:700}.result-row.row-highlight .r-value{color:var(--brand);font-size:16px}.result-row.row-total{border-top:1.5px solid var(--border);margin-top:8px;padding-top:10px}.result-row.row-total .r-label{color:var(--text);font-weight:700}.result-row.row-total .r-value{color:var(--text);font-size:17px}.total-annual-cost{border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;margin-top:22px;padding-top:18px;display:flex}.total-annual-cost span{font-size:16px;font-weight:700}.total-annual-cost .total-value{color:var(--brand);font-size:28px}.page-header{text-align:center;margin-bottom:36px}.logo-badge{background:var(--brand);color:#fff;letter-spacing:.06em;text-transform:uppercase;border-radius:20px;margin-bottom:14px;padding:5px 16px;font-size:13px;font-weight:700;display:inline-block}.page-header h1{font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.15}.page-header p{color:var(--muted);margin-top:10px;font-size:16px}.video-subnote{color:var(--muted);margin-top:10px;font-size:13px;line-height:1.5}.calculator-wrap{grid-template-columns:1.15fr .85fr;align-items:start;gap:28px;max-width:1170px;margin:0 auto;display:grid}@media (width<=980px){.calculator-wrap{grid-template-columns:1fr}}.calculator-left,.calculator-right{gap:24px;display:grid}.empty-results-card{text-align:center;justify-content:center;align-items:center;min-height:320px;display:flex}.empty-results-card h2{margin-bottom:10px;font-size:20px}.empty-results-card p{color:var(--muted);max-width:320px;margin:0 auto;line-height:1.7}.product-toggle{grid-template-columns:1fr 1fr;gap:14px;display:grid}@media (width<=540px){.product-toggle{grid-template-columns:1fr}}.product-toggle-col{flex-direction:column;gap:8px;display:flex}.product-btn{border:1.5px solid var(--border);background:var(--surface);width:100%;color:var(--text);cursor:pointer;border-radius:8px;padding:13px 16px;font-family:inherit;font-size:15px;font-weight:600;transition:all .18s}.product-btn:hover{border-color:#b9c9f0}.product-btn.active{background:var(--brand);border-color:var(--brand);color:#fff}.product-sub{color:var(--muted);text-align:center;font-size:14px;line-height:1.4}.left-card{flex-direction:column;display:flex}.left-section{margin-top:24px}.left-section-title{color:var(--text);margin-bottom:14px;font-size:16px;font-weight:700}.form-group input[type=text]{border:1.5px solid var(--border);width:100%;color:var(--text);background:var(--surface);border-radius:8px;outline:none;padding:10px 14px;font-family:inherit;font-size:15px;transition:border-color .18s}.form-group input[type=text]:focus{border-color:var(--brand)}.video-quality-section{margin-top:24px}.video-toggle{grid-template-columns:1fr 1fr;gap:14px;display:grid}.hw-intro{color:var(--muted);margin-bottom:16px;font-size:13px}.hw-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}@media (width<=540px){.hw-grid{grid-template-columns:1fr}}.hw-option{cursor:pointer;position:relative}.hw-option input[type=checkbox]{opacity:0;width:0;height:0;position:absolute}.hw-option label{border:1.5px solid var(--border);cursor:pointer;border-radius:12px;justify-content:space-between;align-items:center;min-height:88px;padding:16px 18px;transition:all .18s;display:flex}.hw-option label:hover{border-color:#b9c9f0}.hw-option input:checked+label{border-color:var(--brand);background:var(--brand-light)}.hw-name{color:var(--text);align-items:center;gap:10px;font-size:14px;font-weight:600;display:flex}.hw-option input:checked+label .hw-name{color:var(--brand)}.hw-price{color:var(--success);font-size:14px;font-weight:700}.hw-check{border:2px solid var(--border);border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;transition:all .18s;display:flex}.hw-option input:checked+label .hw-check{background:var(--brand);border-color:var(--brand)}.hw-check-tick{border:2px solid #fff;border-top:none;border-left:none;width:5px;height:9px;display:none;transform:rotate(45deg)translate(-1px,-1px)}.hw-option input:checked+label .hw-check-tick{display:block}.calc-btn{background:var(--brand);color:#fff;cursor:pointer;letter-spacing:.02em;border:none;border-radius:10px;width:100%;padding:15px 28px;font-size:16px;font-weight:700;transition:background .18s,transform .1s}.calc-btn:hover{background:var(--brand-dark)}.calc-btn:active{transform:scale(.98)}.error-msg{color:#dc2626;margin-top:10px;font-size:13px}.download-buttons{gap:12px;margin-top:12px;display:flex}.download-btn{color:var(--brand);border:2px solid var(--brand);cursor:pointer;background:#fff;border-radius:8px;flex:1;padding:12px 16px;font-size:14px;font-weight:600;transition:all .18s}.download-btn:hover{background:var(--brand);color:#fff}.master-section{border-top:1px solid var(--border);padding-top:20px}.master-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.master-count{color:var(--muted);font-size:13px;font-weight:600}.master-actions{align-items:center;gap:10px;display:flex}.master-btn{flex:unset;padding:10px 16px;font-size:13px}.master-btn:disabled{opacity:.45;cursor:not-allowed}.master-btn:disabled:hover{color:var(--brand);background:#fff}.clear-btn{color:#dc2626;cursor:pointer;background:0 0;border:none;padding:4px 2px;font-family:inherit;font-size:13px;font-weight:600}.clear-btn:hover{text-decoration:underline}.sync-msg{margin-top:8px;font-size:13px;font-weight:600}.sync-saving{color:var(--muted)}.sync-saved{color:var(--success)}.sync-error{color:#dc2626}.results-header{align-items:center;gap:12px;margin-bottom:22px;display:flex}.results-badge{background:var(--success);color:#fff;text-transform:uppercase;letter-spacing:.05em;border-radius:20px;padding:4px 12px;font-size:12px;font-weight:700}.results-header h2{font-size:20px;font-weight:800}.storage-block{margin-bottom:20px}.storage-label{color:var(--muted);margin-bottom:8px;font-size:12px;font-weight:700}.storage-pill{background:var(--brand-light);color:var(--brand);border-radius:30px;align-items:center;gap:8px;padding:8px 18px;font-size:15px;font-weight:700;display:inline-flex}.year-one-box{color:#fff;background:linear-gradient(135deg,#1a56db 0%,#1a88db 100%);border-radius:12px;grid-column:1/-1;grid-template-columns:1fr 1fr 1fr;gap:16px;padding:24px 28px;display:grid}@media (width<=540px){.year-one-box{grid-template-columns:1fr}}.y-label{opacity:.75;text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;font-size:12px;font-weight:600}.y-value{font-size:22px;font-weight:800}.y-item.big .y-value{font-size:28px}.year2-box{background:var(--success-bg);border:1.5px solid var(--success-bdr);border-radius:10px;flex-wrap:wrap;grid-column:1/-1;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;display:flex}.y2-label{color:var(--success);font-size:14px;font-weight:600}.y2-value{color:var(--success);white-space:nowrap;font-size:20px;font-weight:800}